.airIcon {
  background-image: url('../img/tianqi/airIcon-s8c8bf5fd15.png');
  background-repeat: no-repeat;
}

.airIcon-r1 {
  background-position: 0 0;
}

.airIcon-r2 {
  background-position: 0 -20px;
}

.airIcon-r3 {
  background-position: 0 -40px;
}

.airIcon-r4 {
  background-position: 0 -60px;
}

.airIcon-r5 {
  background-position: 0 -80px;
}

.airIcon-r6 {
  background-position: 0 -100px;
}

.airIcon-r7 {
  background-position: 0 -120px;
}
